how to cast a long number to string java code example

Example 1: toString convert to long

long l = 12345L;
String str = Long.toString(l);
System.out.println(str); //prints '12345'

Example 2: toString convert to long

long l = 12345L;
String str = DecimalFormat.getNumberInstance().format(l);
System.out.println(str); //str is '12,345'
//if you don't want formatting
str = new DecimalFormat("#").format(l);
System.out.println(str); //str is '12345'